Ewan is building a maze for his pet rats out of wood. he needs two pieces that are 2 ¾ feet long, one that is 3.5 feet long and two that are 1 5/8 feet long. ewan can buy wood that is 84 inches long at $2.85 per board, 96 inches long that costs $3.80 for each board, or 10 feet long, for $4.61.

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)